Monoesterifikacija etilenglikola

določanje mehanizma in hitrosti reakcije

Matej Ravber (Author), Andreja Goršek (Mentor), Darja Pečar (Co-mentor)

Abstract

Cilj diplomskega dela je bil razviti kinetični model in mehanizem monoesterifikacije, tipične reverzibilne reakcije. Kot primer smo uporabili monoesterifikacijo etilen glikola z benzojsko kislino. Reakcija je bila katalizirana v kislem mediju ob prisotnosti α-aluminijevega oksida. Vsi eksperimenti so bili izvedeni v avtomatiziranem reakcijskem kalorimetru, opremljenim z in-line IR spektrometrom. Na osnovi IR spektrov in metodologije umeritvene krivulje smo dobili koncentracijske profile produkta. Določili smo red reakcije, obe konstanti proizvodnosti in aktivacijsko energijo. Z uporabo kinetičnih in stehiometričnih podatkov smo ugotovili reakcijski mehanizem, ki pojasnjuje opažene značilnosti reakcije.

Keywords

monoesterifikacija;etilen glikol;reverzibilna rekacija;kinetika;mehanizem;

Data

Language:	Slovenian
Year of publishing:	2012
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[M. Ravber]
UDC:	661.725.822:677.027.622(043.2)
COBISS:	16485654
Views:	1322
Downloads:	189
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Monoesterification of ethylene glycol: determination of mechanism and rate of reaction
Secondary abstract:	The goal of this work was to develop the kinetic model and mechanism of monoesterification, a typical reversible reaction. As an example we used the ethylene glycol monoesterification with benzoic acid. The reaction was catalyzed in acidic medium supported with α-aluminum oxide. All experiments were carried out in an automated reaction calorimeter equipped with an in-line IR spectrometer. Based on the observed IR spectra and calibration curve methodology, product concentration profiles were obtained. Reaction order together with both reaction rate constants and activation energy have been determined. Using the obtained kinetic and stoichiometric data, the reaction mechanism was established which explains the observed reaction characteristics.
Secondary keywords:	monoesterification;ethylene glycol;reversible reaction;kinetics;mechanism;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	64 str.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;chemical technology;chemical and related industries;kemijska tehnologija;kemijske in sorodne industrije;chemicals;kemikalije;kemijski produkti;production of organic substances;organic chemicals;proizvodnja organskih snovi;organske kemikalije;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;various industries;trades and crafts;razne industrije;obrti in rokodelstva;textile industry;tekstilna industrija;
ID:	1026398